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| author | Max Filippov <jcmvbkbc@gmail.com> | 2023-06-07 02:43:47 +0200 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2023-06-13 04:48:55 +0200 |
| commit | 71a5fd7d89fb6e6071f041ba1b55837837ccddb8 (patch) | |
| tree | dd396c0fe821564fba92b4426f7f5a2a7f35b621 /arch/xtensa | |
| parent | xtensa: xt2000: drop empty platform_init (diff) | |
| download | linux-71a5fd7d89fb6e6071f041ba1b55837837ccddb8.tar.xz linux-71a5fd7d89fb6e6071f041ba1b55837837ccddb8.zip | |
xtensa: drop platform_heartbeat
platform_heartbeat is called from the timer interrupt handler, but
there may be no periodic timer interrupts on xtensa, so the frequency of
platform_heartbeat calls may be unrelated to HZ. Drop the callback and
reimplement its only user with a timer.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa')
| -rw-r--r-- | arch/xtensa/include/asm/platform.h | 5 | ||||
| -rw-r--r-- | arch/xtensa/kernel/platform.c | 1 | ||||
| -rw-r--r-- | arch/xtensa/kernel/time.c | 4 | ||||
| -rw-r--r-- | arch/xtensa/platforms/xt2000/setup.c | 20 |
4 files changed, 11 insertions, 19 deletions
diff --git a/arch/xtensa/include/asm/platform.h b/arch/xtensa/include/asm/platform.h index 354ca942de40..3be6b4bf9763 100644 --- a/arch/xtensa/include/asm/platform.h +++ b/arch/xtensa/include/asm/platform.h @@ -48,11 +48,6 @@ extern void platform_power_off (void); extern void platform_idle (void); /* - * platform_heartbeat is called every HZ - */ -extern void platform_heartbeat (void); - -/* * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE) */ extern void platform_calibrate_ccount (void); diff --git a/arch/xtensa/kernel/platform.c b/arch/xtensa/kernel/platform.c index ac1e0e566995..bb4d426ebb44 100644 --- a/arch/xtensa/kernel/platform.c +++ b/arch/xtensa/kernel/platform.c @@ -32,7 +32,6 @@ _F(void, restart, (void), { while(1); }); _F(void, halt, (void), { while(1); }); _F(void, power_off, (void), { while(1); }); _F(void, idle, (void), { __asm__ __volatile__ ("waiti 0" ::: "memory"); }); -_F(void, heartbeat, (void), { }); #ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT _F(void, calibrate_ccount, (void), diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c index 16b8a6273772..1c3dfea843ec 100644 --- a/arch/xtensa/kernel/time.c +++ b/arch/xtensa/kernel/time.c @@ -121,10 +121,6 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id) set_linux_timer(get_linux_timer()); evt->event_handler(evt); - - /* Allow platform to do something useful (Wdog). */ - platform_heartbeat(); - return IRQ_HANDLED; } diff --git a/arch/xtensa/platforms/xt2000/setup.c b/arch/xtensa/platforms/xt2000/setup.c index 08bc9b0ede3e..dc187684203b 100644 --- a/arch/xtensa/platforms/xt2000/setup.c +++ b/arch/xtensa/platforms/xt2000/setup.c @@ -23,6 +23,7 @@ #include <linux/platform_device.h> #include <linux/serial.h> #include <linux/serial_8250.h> +#include <linux/timer.h> #include <asm/processor.h> #include <asm/platform.h> @@ -70,16 +71,17 @@ void __init platform_setup(char** cmdline) /* Heartbeat. Let the LED blink. */ -void platform_heartbeat(void) +static void xt2000_heartbeat(struct timer_list *unused); + +static DEFINE_TIMER(heartbeat_timer, xt2000_heartbeat); + +static void xt2000_heartbeat(struct timer_list *unused) { - static int i, t; + static int i; - if (--t < 0) - { - t = 59; - led_print(7, i ? ".": " "); - i ^= 1; - } + led_print(7, i ? "." : " "); + i ^= 1; + mod_timer(&heartbeat_timer, jiffies + HZ / 2); } //#define RS_TABLE_SIZE 2 @@ -137,7 +139,7 @@ static int __init xt2000_setup_devinit(void) { platform_device_register(&xt2000_serial8250_device); platform_device_register(&xt2000_sonic_device); - + mod_timer(&heartbeat_timer, jiffies + HZ / 2); return 0; } |